Abstract: In order to solve problem of the existing infrared calibration system as laboratory calibration and engineering calibration, a simple infrared calibration system was designed for practical applications in the fields. Its response model was established. Key parameters such as the standard radiation source were also analyzed in detail. In addition, an assistant system was designed and performed in practical measurements. A infrared radiation calibration system was bulit up and the corresponding experiment was performed. Compared with the laboratory calibration results, it was shown that the designed setup could be employed in infrared calibration and radiation measurement with attractive precision and useful simplicity.